(someone's) grasp of reality

Translations
восприятие (кем-то) реальности
Her grasp of reality was questioned after she shared her bizarre theories.
Её восприятие реальности было поставлено под сомнение после того, как она поделилась своими странными теориями.
Definitions
A person's understanding or perception of what is real and true, as opposed to what is imagined or false. If someone has a strong grasp of reality, they are aware of and accept the actual state of things; if their grasp of reality is weak, they may be confused, delusional, or out of touch with what is really happening.
Words
grasp

noun
понимание
reality

noun
реальность